Belt sanding-machine.



P. SGHIMMEL.

BELT SANDING MACHINE.

APPLICATION FILED DEG.11, 1912. RENEWED SEPT. 9, 1914.

Patented Oct. 20, 1914.

III

THE. NORRIS PETERS c INVENTOR f" W Arm 0.1 FHOTO LITH-l, WASHINGTON. n C

UNITED STATES PATENT OFFICE.

FRIDOLIN SCHIMMEL, OF FARIBAULT, MINNESOTA.

BELT SAN DING-MACHINE.

Application filed December 11, 1912, Serial No. 736,069.

To all whom it may concern Be it known that I, FmDoLIN SOHIMMEL, a citizen of the United States, residing in Faribault, Rice county, State of Minnesota, have invented certain new and useful Improvements in Belt Sanding-Machines, 01 which the following is a specification.

My invention relates to abrading machines and more particularly to machines for sanding and polishing plain surfaces wherein a continuous abrading belt and a manually operated reciprocating carriage for pressing the abrading belt to its work are used, and has for its object the production of a simple carriage which will give vertical and horizontal movements to the presser foot and at the same time stability and positive movement of the presser foot in the path of action of the belt.

The foregoing and other features of my invention will now be described in connection with the accompanying one sheet of drawings forming part of the specification in which I have represented my carrier and sanding machine in its preferred form, after which I shall point out more particularly in the claims, those features which I believe to be new and of my own invention.

Figure 1 is a front view of my machine, Fig. 2 a plan or top View thereof. Fig. 3 is an enlarged side view of the channel and carriage, section A A Fig. 2.

In my invention I employ upright standards 1 provided at the top thereof with pulleys 2 over which a continuous abrading belt 3 is adapted to run. This belt is kept tight by any well known belt tightener 4E and may be driven at will by means of the driving pulleys 5. Under the belt I provide a table 6 with means 7 for adjusting its height vertically. Inasmuch as all of these features are common to manually operated belt sanders they need not be further speci fically described herein.

Near the top of my supports 1 Iprovide a frame 8 consisting of two channel bars placed back to back with space between the webs. A carriage frame 9 is provided with bearings 10 in which the rollers 11 and 12 are free to turn. These rollers are spaced so that two rollers 12 ride on the inside face of the webs of the channels and rollers 11 ride on the flanges of the channels, as will be readily understood by referring specifically to the Fig 3. On the forward portion of the carriage 9 I provide two uprights 13 having Specification of Letters Patent.

Patented Oct. 20, 1914.

Renewed September 9, 1914. Serial No. 860,953.

two bearings 14 and 15. In my device I employ a presser foot 16 of any well known type which is pivotedly mounted to an upright 17 provided withbearings l8 and 19. The bearings 18 and 14- are connected by a I-shaped link 20 and bearings 19 and 15 are connected by a triangular link 21,-thereby giving parallel vertical motion to the upright 17. The links 20 and 21 and upright 17 may be counterbalanced by a weight 22. A handle to the carriage is .provided at 23. As will be readily understood by referring to Fig. 3, the rollers 11 are of such a diameter as to bear against the flanges of the channel member 8, and the rollers 12 are of such a diameter as to bear against the web faces of these channels 8. These rollers permit a free movement in a horizontal direction of the carriage 9. The presser foot 16, which is adapted to be raised or lowered manually, can be brought in direct contact with the back of the abrading belt 3 and is held away from its work by the counterbalance weight 22 and brought in contact with the belt by pressing the handle 23 down.

I wish it distinctly understood that my sanding machine herein illustrated and described, is in the form in which I desire to construct it and any changes or modifications may be made without departing from the salient features of my invention and I therefore intend the following claims to cover such modifications as naturally fall within the lines of invention.

I claim:

1. In an abrading machine the combination of an abrading belt, means for moving said belt, a stationary channel guideway provided with a reciprocally movable carriage, a frame pivotedly mounted to the carriage, a presser foot pivotedly mounted to said frame and means to manually press said presser foot tothe abrading belt.

2. In an abrading machine the combination with an endless abrading belt, means for driving said belt, a vertically movable presser foot frame pivotedly mounted to a reciprocally movable carriage, the said carriage mounted on two horizontal stationary channels, suitable leverage to manually reciprocally move the said carriage and press the said presser foot on the endless abrading belt.

3. In an abrading machine the combination with the endless abrading belt, means for guiding said belt, a reciprocally movable carriage, a pair of stationary channels adapted to receive rollers mounted on the reciprocally movable carriage, a frame pivotedly mounted to the carriage, a pivotedly 3 mounted presser foot on the frame.

4:. In an abrading machine the combination With the endless abrading belt; means for driving said belt, a stationary channel frame; a reciprocally movable carriage provided with rollers adapted to engage, and be supported by, the channel frame; a frame pivotedly mounted to the carriage, a presser foot pivotedly mounted to said frame, a

movable counterbalance Weight attached to said frame to hold the presser foot away 1.5 from the endless belt, and a suitable leverage to manually press said presser foot on said belt and reciprocally move the said carriage. This specification signed and witnessed at Faribault, Rice county, State of Minnesota, 20 this 9th day of December, A. D., 1912.

FRIDOLIN SCHIMMEL.

In the presence of ROBERT MEE, HENRY SGHLATTER.

Copies of this patent may be obtained for five wit; each, by addressing the Commissioner of Patents. Washington, D. C. 

